MC74HCT138A_15 Datasheet, PDF (4/7 Pages) ON Semiconductor – 1-of-8 Decoder/ Demultiplexer with LSTTL Compatible Inputs

MC74HCT138A
EXPANDED LOGIC DIAGRAM
A0 ¹
A1 ²
A2 ³
CS3 ⁵
CS2 ⁴
CS1 ⁶
15 _Y0
14 _Y1
13 _Y2
12 _Y3
11 _Y4
10 _Y5
9 _Y6
7 _Y7
INPUT A
t_PLH
OUTPUT Y
SWITCHING WAVEFORMS
VALID
1.3 V
1.3 V
VALID
t_PHL
t_r
3V
INPUT CS1
2.7 V
1.3 V
0.3 V
GND
t_PHL
OUTPUT Y
90%
1.3 V
10%
t_THL
Figure 1.
Figure 2.
t_f
3V
GND
t_PLH
t_TLH
t_r
INPUT
CS2, CS3
2.7 V
1.3 V
0.3 V
t_PHL
OUTPUT Y
90%
1.3 V
10%
t_THL
Figure 3.
t_f
3V
GND
t_PLH
t_TLH
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